diff --git a/src/Detector/vibe_src/vibe.cpp b/src/Detector/vibe_src/vibe.cpp
index 1c9fb6b24..39ab68bdc 100644
--- a/src/Detector/vibe_src/vibe.cpp
+++ b/src/Detector/vibe_src/vibe.cpp
@@ -21,7 +21,7 @@ namespace vibe
 	}
 
 	///
-	cv::Vec<size_t, 2> VIBE::getRndNeighbor(int i, int j)
+	cv::Vec2i VIBE::getRndNeighbor(int i, int j)
 	{
 		int neighbor_count = (m_pixelNeighbor * 2 + 1) * (m_pixelNeighbor * 2 + 1);
 		int rnd = m_rng[m_rngIdx = (m_rngIdx + 1) % RANDOM_BUFFER_SIZE] % neighbor_count;
diff --git a/src/Detector/vibe_src/vibe.hpp b/src/Detector/vibe_src/vibe.hpp
index 00b36ed5d..46b7b109f 100644
--- a/src/Detector/vibe_src/vibe.hpp
+++ b/src/Detector/vibe_src/vibe.hpp
@@ -37,7 +37,7 @@ class VIBE
     unsigned int m_rng[RANDOM_BUFFER_SIZE];
     int m_rngIdx = 0;
 
-    cv::Vec<size_t, 2> getRndNeighbor(int i, int j);
+    cv::Vec2i getRndNeighbor(int i, int j);
 	void init(const cv::Mat& img);
 };
 }